PHP accelerator on VPS

Hi,

We have Cloud Server 2-Core CPU, 8GB Ram... do we need PHP accelerator ? if so, how do I install it or shall I just ask the Hosting provider to do it?

Thanks

Depends on your load time, traffic etc.  If you only have a few people per day and the load times are still reasonable, then I wouldn't worry about it.

If things are slow for google/visitors, and you could benefit from a cacheing system, I would try for APC, or Memcached maybe.  There are guides all over the place on how to install and use them.